Kinetics and equilibrium studies of malachite green adsorption on rice straw-derived char

Hameed, B.H.; El-Khaiary, Mohammad I.

doi:10.1016/j.jhazmat.2007.09.019

Cited by 232 publications

(81 citation statements)

References 35 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Most of the chars derived from many sources have been found to exhibit good performance for basic dyes (Table 1). However, the bamboo biochar in this study exhibited a high adsorption capacity for acid dye and was found to be comparable to those of many corresponding chars from rice straw, sewage sludge and crop residues (Hameed and El-Khaiary 2008;Jindarom et al 2007;Xu et al 2011). …”

Section: Effect Of Ph On Adsorption Capacitymentioning

confidence: 62%

Evaluation of adsorption potential of bamboo biochar for metal-complex dye: equilibrium, kinetics and artificial neural network modeling

Yang

Lin

Wei³

et al. 2013

Int. J. Environ. Sci. Technol.

154

View full text Add to dashboard Cite

Metal-complex dyes are widely used in textile industry, but harmful to the environment and human health due to aromatic structure and heavy metal ions. The objective of this work was to evaluate the adsorption potential of bamboo biochar for the removal of metalcomplex dye acid black 172 from solutions. Freundlich model was more suitable for the adsorption process of bamboo biochar than Langmuir isotherm, indicating multilayer adsorption of acid black 172 on a heterogeneous bamboo biochar surface. Adsorption kinetics analysis of pseudo-second-order and Weber-Morris models revealed that intraparticle transport was not the only rate-limiting step. The bamboo biochar exhibited a good adsorption performance even at high ionic strength. Analysis based on the artificial neural network indicated that the temperature with a relative importance of 29 % appeared to be the most influential parameter in the adsorption process for dye removal, followed by time, ionic strength, pH and dye concentration.

show abstract

Section: Effect Of Ph On Adsorption Capacitymentioning

confidence: 62%

Evaluation of adsorption potential of bamboo biochar for metal-complex dye: equilibrium, kinetics and artificial neural network modeling

Yang

Lin

Wei³

et al. 2013

Int. J. Environ. Sci. Technol.

154

View full text Add to dashboard Cite

show abstract

“…MG is extremely cytotoxic to mammalian cells, as it induces free radical formation, acts as a potent liver tumor promoter and induces malignant transformation [8]. Although the use of this dye has been banned in several countries [9][10][11][12] and not approved by US Food and Drug Administration, it is still being used in many parts of the world including Egypt due to its low cost, ready availability and efficacy [13,14].…”

Section: Introductionmentioning

confidence: 99%

Can Malachite Green Concentrations Cause Hepatic Toxic Effects in Adult Albino Rats: Histological, Biochemical and Immunohistochemical

NAM¹,

Elgendy²

2016

J Cytol Histol

View full text Add to dashboard Cite

Malachite green (MG) has been widely used as the most efficacious antifungal agent in the fish farming industry. The aim of this study is to evaluate hepatotoxicity of different MG concentrations in adult albino rats. Forty five adult male albino rats were equally divided into 3 groups, each contains 15 rats. Group I (control), Group II (received daily dose of 3ug/kg b.wt of MG by oral gavage): divided into three subgroup equally according to time of taken sample and Group III (received daily gavage dose of 60ug/kg b.wt of MG by oral gavage): divided into three subgroup equally according to time of taken sample (Samples were taken 2 and 4 weeks from the start of the experiment and 2 weeks after drug stoppage (wash out). Hepatotoxicity was evaluated by biochemical, histopathological and immunohistochemical study. MG caused an increase of alanine aminotransferase, aspartate amino transferase (ALT and AST), alkaline phosphatase (ALP) levels, and decrease in total protein in animals treated with MG as compared to control. These biochemical alterations were confirmed by the presence of different histological changes as degeneration of hepatocytes with congested dilated central vein , mononuclear inflammatory cells infiltration with significant increase in caspase-3 expression with decrease in survivin expression and this changes were highly significant in rats treated with higher doses than other groups and persist even after 2 weeks from MG stoppage .We can conclude that MG and its residues in the edible tissue of fish could not be ignored due to their suspected hepatotoxicity with apoptotic changes even at lower doses. This leads us to put strict limitations on its use in the fish farming industry in Egypt.

show abstract

“…The presence of the dye component in the discharge not only increases the overall loading of Chemical Oxygen Demand (COD) to the receiving water but also creates an aesthetic nuisance to the environment even when the concentration is as low as 1ppm. Thus, the removal of color dyes from wastewater before they are contacted with unpolluted natural water bodies is important (Iqbal and Ashiq, 2007;Li et al, 2010;Mui et al, 2010;Valix et al, 2006;Hameed and El-Khaiary, 2008;Namasivayam and Sgngeetha, 2006).…”

Section: Introductionmentioning

confidence: 99%

Utilization from Cement Kiln Dust in Removal of Acid Dyes

Kh¹

2012

American Journal of Environmental Sciences

View full text Add to dashboard Cite

Problem statement:The growth of industries and day to day changes in human activities has resulted in an increase in the volume and complexity of wastewater to the environment. Textile industry is one of the most water consumers industries of Egypt, thus discharges large amounts of wastewater effluents during processing, especially, in the coloring and washing steps. Cement kiln dust is a solid waste in cement manufacturing. Approximately 2.5-3.0 (6-9%) million tons of cement kiln dust is produced annually in Egypt and that cause significant environmental problems. Approach: This study aims to investigate removal of some acid dyes from aqueous solution using cement kiln dust and monitoring the dye in colored cement kiln dust. Solution with 0.4 g L −1concentration was treated with cement kiln dust until the color of dye disappears. The colored cement kiln residue was separate by filtration and dried. The concentration of dye was measured before and after treatment by UV-Vis spectroscopy as well as after washing of colored residue. Also, the colored residue was investigated with, XRD, IR and DSC techniques as well as the loss on ignition at 450°C. Results:The results found that the cement kiln dust has the power to remove all existing acid dyes and the residue has the same color of dye. When colored residue was washed with water, there was no back diffusion of dye in to water. This may be mainly due to chemical reaction that took place between cement kiln dust and dye. Thus analysis such as IR, XRD and DSC are in agreement with these results. Conclusion: CKD is efficient in the processes of dye removal from aqueous solutions. The interaction between acid dye and CKD is fast (just minutes). So, we suggest using spent CKD for dye removal of waste water.

show abstract

Kinetics and equilibrium studies of malachite green adsorption on rice straw-derived char

Cited by 232 publications

References 35 publications

Evaluation of adsorption potential of bamboo biochar for metal-complex dye: equilibrium, kinetics and artificial neural network modeling

Evaluation of adsorption potential of bamboo biochar for metal-complex dye: equilibrium, kinetics and artificial neural network modeling

Can Malachite Green Concentrations Cause Hepatic Toxic Effects in Adult Albino Rats: Histological, Biochemical and Immunohistochemical

Utilization from Cement Kiln Dust in Removal of Acid Dyes

Contact Info

Product

Resources

About